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Priyo Heru Adiwibowo
Universitas Negeri Surabaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Pengaruh Rasio Sudu Terpancung Berpenampang Segitiga Terhadap Kinerja Turbin Crossflow Adiwibowo, Priyo Heru; Walianduw, Grummy; Nurjannah, Ika; Purwanto, Aris
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 2 (2025): July 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i2.1070

Abstract

nergi merupakan kebutuhan fundamental bagi kehidupan manusia. Salah satu alternatif energi terbarukan adalah Pembangkit Listrik Tenaga Mikrohidro (PLTMH), yaitu sistem pembangkit skala kecil yang memanfaatkan aliran air. Pada PLTMH, turbin crossflow banyak digunakan, namun memiliki keterbatasan dalam menghasilkan daya. Penelitian ini bertujuan untuk menganalisis pengaruh rasio sudu terpancung berpenampang segitiga terhadap kinerja turbin crossflow poros horizontal. Penelitian ini menggunakan metode eksperimen dengan memvariasikan rasio sudu terpancung  0,2; 0,4; 0,6, dibandingkan dengan sudu v yang tidak terpancung (rasio 1), dan plat datar (rasio 0) pada turbin crossflow poros horizontal. Jumlah sudu yang digunakan adalah 3 yang akan diuji dengan variasi kapasitas air sebesar, 11,024 L/s, 14,322 L/s,  dan 18,113 L/s dengan variasi pembebanan terhadap daya dan efisiensi. Hasil penelitian menunjukkan bahwa daya maksimum diperoleh pada rasio sudu terpancung 0,4 dengan kapasitas aliran 18,113 L/s dan beban 8000 gram sebesar 4,204 Watt. Efisiensi tertinggi dicapai pada rasio sudu terpancung yang sama, yaitu 0,4, dengan kapasitas 11,024 L/s dan beban 5000 gram sebesar 85,77%. Pencapaian ini disebabkan karena pada rasio sudu terpancung 0,4 aliran dapat dimanfaatkan secara lebih optimal sehingga menghasilkan putaran (RPM) yang tinggi serta torsi yang lebih besar.   Energy is a fundamental need for human life. One renewable energy alternative is the Microhydro Power Plant (PLTMH), a small-scale power generation system that utilizes water flow. In PLTMH, crossflow turbines are widely used, but have limitations in generating power. This study aims to analyze the effect of the truncated blade ratio with a triangular cross-section on the performance of a horizontal-axis crossflow turbine. This study uses an experimental method by varying the truncated blade ratio of 0.2; 0.4; 0.6, compared to untrimmed v-blades (ratio 1), and flat plates (ratio 0) in a horizontal-axis crossflow turbine. The number of blades used is 3 which will be tested with variations in water capacity of 11,024 L/s, 14,322 L/s, and 18,113 L/s with variations in loading on power and efficiency. The results of the study showed that the maximum power was obtained at a cut-off blade ratio of 0.4 with a flow capacity of 18.113 L/s and a load of 8000 grams of 4.204 Watts. The highest efficiency was achieved at the same cut-off blade ratio, namely 0.4, with a capacity of 11.024 L/s and a load of 5000 grams of 85.77%. This achievement was due to the fact that at a cut-off blade ratio of 0.4 the flow could be utilized more optimally, resulting in high rotation (RPM) and greater torque.  
Effect of Angle of Attack on Drag and Lift Coefficients on Naca Airfoil for Wind Turbine Application Adiwibowo, Priyo Heru; Purwanto, Aris; Rasyid, Akhmad Hafizh Ainur; Saepuddin, Ahmad
Aceh International Journal of Science and Technology Vol 14, No 2 (2025): August 2025
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.14.2.47327

Abstract

The development of renewable energy is expected not only to reduce dependence on fossil fuels but also to support the transition toward cleaner and more sustainable energy systems in the future. The combustion of fossil fuels significantly contributes to greenhouse gas emissions, thereby accelerating global climate change. Recognizing these limitations and negative environmental impacts, researchers and energy experts have begun to explore and develop various alternative energy sources that are more environmentally friendly and sustainable. Among them, wind energy is one of the most promising and widely available clean energy resources. The efficiency of wind turbines can be enhanced by optimizing the aerodynamic characteristics of their blades. This study examines the aerodynamic properties of three distinct NACA airfoil profiles: NACA 0012, NACA 2412, and NACA 3412. These profiles differ in camber magnitude and distribution, yet they share a maximum thickness of 12% of the chord length. Computational Fluid Dynamics (CFD) simulations were conducted using ANSYS Fluent with angles of attack ranging from -20 to 20. The results reveal that the NACA 2412 airfoil demonstrates the best aerodynamic performance at an angle of attack of 5, achieving the highest lift-to-drag ratio (L/D).
ANALISIS POSTUR KERJA PADA OPERATOR MESIN BUBUT DENGAN METODE RULA DAN REBA (STUDI KASUS : DEPARTEMEN FABRIKASI PT. XYZ) Adiwibowo, Priyo Heru; Muhammad Farhanuddin Wijaya; Vablo Gloria, Siagian, Jevandra; Sukmono, Yudi
Jurnal Teknik Industri (JATRI) Vol. 3 No. 2 (2025): Jurnal Teknik Industri (JATRI)
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/be3jw387

Abstract

Dalam proses fabrikasi, postur kerja yang tidak ergonomis dapat menyebabkan risiko gangguan muskuloskeletal pada pekerja. PT. XYZ. Sebagai perusahaan yang bergerak di bidang pembuatan, perawatan, dan perbaikan komponen alat berat memiliki potensi risiko ini, terutama pada operator mesin bubut yang melakukan aktivitas facing dan drilling. Penelitian ini bertujuan untuk menganalisis postur kerja operator menggunakan metode RULA dan REBA guna menilai risiko cedera dan memberikan rekomendasi perbaikan ergonomi. Pengumpulan data primer dilakukan melalui dokumentasi foto operator saat bekerja, kemudian dianalisis menggunakan perangkat lunak AutoCAD untuk menentukan ukuran sudut postur tubuh operator saat bekerja. Kuesioner Nordic Body Map (NBM) juga digunakan untuk mengidentifikasi bagian tubuh yang mengalami keluhan. Hasil analisis menunjukkan operator 1 memiliki skor NBM sebesar 51 dengan keluhan pada pinggang dan pergelangan tangan kanan, sedangkan operator 2 memiliki skor NBM sebesar 53 dengan keluhan pada pinggang, bokong, lengan bawah kanan, dan pergelangan tangan kanan. Hasil metode RULA, postur kerja operator 1 memerlukan pemeriksaan dan perubahan segera untuk mengurangi risiko gangguan muskuloskeletal. Operator 2 juga membutuhkan pemeriksaan lebih lanjut, meskipun posturnya masih dapat ditoleransi jika diselingi dengan peregangan berkala. Sementara itu, hasil analisis metode REBA menunjukkan kedua operator memiliki risiko sedang, sehingga tindakan ergonomis diperlukan untuk mengurangi risiko cedera jangka panjang.
Literature review of modification of u-type savonius wind turbine rotor for low wind speeds Alfatih, Muhammad Danang Ilham; Adiwibowo, Priyo Heru; Saptono, Renaldi Prima; Fani, Rayhan Aulia Iman; Pambudi, Dimas Ridho; Ciptafarizi, Muhammad Zardana; Setiawan, Kharis
JMEL : Journal of Mechanical Engineering Learning Vol. 13 No. 1 (2024): June
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jmel.v13.i1.5845

Abstract

A wind turbine is one of the tools that can be used to convert wind energy into electrical energy. The increasing need for electrical energy in Indonesia and fossil fuels are running low, so alternative to fossil fuels are needed. One of them is a wind turbine that can convert wind energy into wind mechanical energy into kinetic energy in the form of turbine blades that are used to rotate generators that can produce electricity. Indonesia is an area that has low wind speed. This study aims to analyze the effect of U-type savonius wind turbine rotor modification at low wind speeds. The research method used is a qualitative method in which we conduct library research on various literature to examine the effect of turbine rotor modification. The results obtained are the addition of a guide vane or deflector and the increase in the number of blades on the turbine rotor can improve the performance of the U-type savonius wind turbine.
ANALISIS KEKUATAN TABUNG GAS LPG KAPASITAS 12 KG BERBAHAN CAST CARBON STEEL MENGGUNAKAN METODE ELEMEN HINGGA Ahmad Saepuddin; Luchyto Chandra Permadi; Priyo Heru Adiwibowo
Steam Engineering Vol. 5 No. 1 (2023): STEAM Engineering, Vol. 5, No. 1, September 2023
Publisher : Program Studi Pendidikan Teknik Mesin, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/jptm.v5i1.10963

Abstract

Liquefied Petroleum Gas (LPG) is gas that is formed from the production of oil refineries and gas refineries. An energy source that is widely used in everyday life, especially in cooking and heating applications. The purpose of this study was to examine the strength performance of a 12 kg LPG gas cylinder in the face of external pressure that occurs during normal use. The method used in writing this scientific article is to review various literature and other references related to the analysis of the strength of LPG gas cylinders using SolidWorks software with the finite element method. The results of the analysis of the strength of the structure and the factor of safety obtained are the force test of 7.826e+03 and the theoretical value of 7.827.18385 does not exceed the yield strength value (2.482 x 105). After analysis, it is known that the smallest gas cylinder safety validation value is 1,1 and a maximum of 22.7, so that the material structure is safe and can be used to manufacture 12 kg LPG gas cylinders.
PERANCANGAN PROTOTIPE SIZING MACHINE GUNA MEMPERMUDAH PEMILAHAN BIJI KOPI Saepuddin, Ahmad; Adiwibowo, Priyo Heru; Drastiawati, Novi Sukma
Steam Engineering Vol. 5 No. 2 (2024): STEAM Engineering, Vol. 5, No. 2, Maret 2024
Publisher : Program Studi Pendidikan Teknik Mesin, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/jptm.v5i2.12837

Abstract

The aim of the research is to design a tool that can assist coffee farmers in determining the quality of the coffee beans produced according to the desired grade value of the coffee beans. The tool is designed to be able to fulfill the functional value produced by the tool. So that farmers can work fast, save time in the process of grading and sorting coffee beans, able to minimize operational costs, and save energy. With an electric motor power of 1 hp, the sizing machine is capable of sorting coffee with a capacity of ±250 kg/hour, therefore a day's the process of sorting 500 kg of coffee can be achieved in less than 2 hours. This really helps coffee farmers in determining the quality of coffee beans without taking a long time.
Co-Authors -, Masykur A. Grummy Wailanduw Ahmad Saepuddin Aisyah Endah Palupi Akhmad Hafizh Ainur Rasyid Alfatih, Muhammad Danang Ilham Anggraini, Widiya Anshori, Latif ARI PRADANA, RIZKI Arianto, Christoper Jou Farrel ARIPRASETYA, SENA Aris Ansori Aris Setiawan Aristandi, Anang Budihardjo Achmadi Hasyim Ciptafarizi, Muhammad Zardana Dany Iman Santoso Dyoritu, Vico Jose Fani, Rayhan Aulia Iman FARID RAHMAN HAKIM, MUHAMMAD Fathana, Adhistya Ahnaf Fadhil Fernanda, Andi Dwi FITRIANA, MAHMUDA Fitriani, Indah Martha Gimnastyar, Andrias HAPSARI WIBAWANTO, HERNING Hariyanto, Farhan Eka Terang Hidayat, Bagus Mukti Hidayatullah, Rachmad Syarifudin I Made Arsana Ika Nurjannah, Ika ILHAM PRABOWO, BOY Ilriansyah, Muhammad Ryo INDAH WAHYU NINGTYAS, NUR Indra Herlamba Siregar Irfa’i, Mochamad Arif Iskandar Iskandar Jatmiko, Danang Tri Junaidi, Mario Verinanda Khafid KHAIRUL ANAM, DIMAS KHOLBIKA FITROH, HANNAS Krisdianto, Odik Dwi Luchyto Chandra Permadi Luqmanul Hakim Mario Verinanda Junaidi MAULANA, TUTUR Muhaji Muhaji Muhammad Farhanuddin Wijaya Muhammad, Anovan Fadhil NASHRULLAH, ALFIAN Novi Sukma Drastiawati Pambudi, Dimas Ridho PANJI NUGROHO, PEGGY Permadi, Luchyto Chandra PRADANA ASPRILIANSYAH, IQSWANDA Pramudito, Estu Arya Pratama, Eksa Fernando Purnomo, Seno Aji Putra, Alrivan Prananda Rasyid, Akhmad Hafizh Ainur RYAN PRIAMBODHO, GIGGA Saifuddin Z, Mohammad Santoso, Budi Saptono, Renaldi Prima Saputra, Rico Arya Sari, Handini Novita Siswoyo, Dirgha Andi SUTRIMO, DIAN Vablo Gloria, Siagian, Jevandra Valentino, Alvaro WAHDANI INSANTO, MUHAMMAD Wahyu Dwi Kurniawan Walianduw, Grummy Yasin, Yusuf Febryan Yudi Sukmono, Yudi Yunitasari, Bellina Zaki, Fatih Zakiyya, Hanna